Treating metal articles



J. E. POOL.

TREATING METAL ARTICLES.

APPLICATION FILED IAN. II, 1919.

1 ,41 O, 1 1 '7 Patented Mar. 21, 1922.

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WITN INVENTOR 4 J. E. PO0L. TREATING METAL ARTICLES. APPLICATION FILED JAN. Il, 1919.

1,41o,1 17. A Patented 1111.121, 1922.

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' UNITED sTATEs PATENT oFFlcE.

JOSEPH E. POOL, OF CARNEGIEL PENNSYLVANIA..

TREATING METAL ARTICLES.

Speoication of Letters latent.' Patented Mar. 21, 1922.

Application tiled January 11, 1919. Serial No.' 270,650.

My invention relates to treating metal articles, and has special reference to the cleaning of steel strips, bars, pipe, shafting and other similar articles.

The object of my invention is tovproduce a cheap, simple and eiiicient method and apparatus for removing the projections or particles of scale, slag, oxide coatings and other impurities from such articles, while in a cold state, and thus place them in a thoroughly smooth and clean state or condition for future operations or use, as is desired.

To these ends my invention consists, generally stated, in the novel method and apparatus for treatin metal articles, as hereinafter more speci cally set forth and described and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to practice my improved method and construct and use `my improved apparatus for treating metal articles, I will describe the same more fully, referring to the accompanying drawings, in which:

Figure 1 is a plan view partly in section of my improved apparatus for use in carrying out m improved method of treating metal artic es;

Fig. 2 is a longltudinal central section of the same, taken on the line 2-2-Fig. 1 and looking in the direction of the arrows;

Fig. 3 is a section of one of the sand blocks, taken on the line 3-3 of Fig. 1 and looking in the direction of the arrows;

Fig. 4 is a sectional view of one of the sand nozzles; and

Fig. 5 is anend view of the nozzles and looking at the outer end of the same.

Like symbols of reference herein indicate like parts in each of the figures of the drawmgs.

As i lustrated in the drawing, my improved apparatus for treatin metal articles 1s shown at A and consists o a bed or table 1, preferably of cast metal, which is supported on legs (not shown) or in any other suitable manner, andon the front or enterin end of such table is mounted a pair of ro ls 2, which are set in a vertical position and in line with each other. In front of the rolls 2 is a guide 3 and back of the said rolls is another guide 4 which extends from said 'rolls back to another pair of rolls 5 and which are mounted at the rear or discharging end ofsuch table 1, and such rolls 5 are similar to the rolls 2 and are also set in a vertical position and in line with each other.

Between the rolls 2 and 5 and on each side of the guide 4 is a sand block 6, preferably of cast metal, which is provided with ver-2V tical pockets 7 thereon and of different depths. The blocks 6 are each 'provided with a cover 8 for forming a receptacle 8 over the same, and into the top of such cover leads a base or other tubular connection 9. This tubular connection 9 leads from a suitable sand supply tank (not shown) which can bev located over vsaid blocks or at any suitable place desired, and is adapted to be subjected to an air pressure in any suitable manner for forcing the sand down into the pockets 7. Connected to each one of the pockets 7 in the blocks 6, is a assage-way or nozzle 10, which is screwedp 4into holes 6 blocks by a threaded inner lportion l10. in the usual manner, vand such nozzles extend in such forwardly at an angle from each of said blocks. These nozzles 10 are placed opposite openings 41 in each of the sides of the guide 4 at different heights and overla eachother soas to stagger the same. T e outer or outlet portions 11 on the nozzles 101 are attened vertically in order to project the4 vsand therefrom over the greatest space possible -'on the articles being-cleaned and b a narrow orifice 12 formed thereby. A sided shoulder 13 is formed on the nozzles 10 in order to permit the use of a wrench on the same to remove and insert such nozzles in the blocks when-desired.

A manifold 14 for accommodating the air and leading from a suitable air supply is placed Aalong the outer sides of each of the sand blocks 6, and from' such manifold pipes 15', each controlled by a valve 15, lead into the blocks. These pipes 15 open into each of the pockets 7 and abut the center of the same, so that the air assing through the .same and into the poc ets from the manifold will pick nip and mix with the sand as it is dropped rom the receptacle 8 into the pockets and will continue out through lthe nozzles 10 on to the article being cleaned,

as hereinafter described.

The rolls 2 and 5 are operated by any suitable mechanism, such as by means of pinions 16 connected to the upper end of the roll shafts 17 and meshing with each other, and one of said shafts on each of the rolls 2 and 5 is provided with a worm wheel 18 at the lower end of the shafts 17 which engages with a worm 19 on a crossshaft 20. A pulle 21 is placed on the ends of each of the sha s 20 and such pulleys are connected together by a belt 22. Another pulley 23 is also placed on one of the crossshafts 20 and a belt 24 is placed around the same and connected to any suitable source of power.

The lower ends of the pockets 7 are contracted as at 25, and a set screw 26 is adapted to pass into the same to regulate the amount of sand fed to he nozzles 10 from, said pockets The manner of practicing the method and using the apparatus for my improved treating of metal articles is as follows:

The article to be cleaned, such as a steel strip, after it has been rolled to the proper size and shape and while in such state is placed on its edge and passed through the gpide 3 and into the rolls 2 where it will cau ht by said rolls and then it passes into t e uide 4. The stripA in passing through tige guide 4 to the, rolls 5 will be caught by4 said rolls, and such strip in passing the openings 4 in said guide the sand blast composed of the sand and air will be projected against the sides of the strip 1 from the nozzles 10 and thus clean the scale,

slag, oxide or other impurities from the sides of said strip. After the strip has been thus cleaned and passed through the guide 4 and rolls 5 is can be run onto a reel (not shown) and will then be bution to other departments for operators, etc.

strip it can drop thro h an opening 27 in the table into a suitlile receptacle (not shown) where it can be collected for future use, and it will be evident that asuitable cabinet or enclosure can be placed between the rolls 2 and 5 to overcome any possibility of the sand escaping in operatingon the strips.

The rolls 5 are arranged to operatev a a good taut strip in passing ,through such rolls and thus ive a slight stretch to the strip, 'which wil help toa certain extent to upset or loosen the formation of the oxide on the metal before it is exposed tol the action of the sand blast.

It will be obvious that different Widths of articles can be passed through the device t0 be cleaned by the sand blast, and in ready for distri' Afterl the sand has thus played on the4 frictional tioned feed ro s case it is desired to cleanl narrower` sheets than the height of somel of the nozzles 10, the upper nozzle or nozzles can be shut off by simply lclosing their \valves 15 thereby shutting off the air and the sand in such nozzle or nozzles. Y

It will thus be seen that in the use of my improved methodand apparatus, the great expense, dissatisfaction and loss due to the usual pickling of these articles are overcome and the guides and other parts of the device may be made to accommodate the widest strips, while at the same time an article will be roduced in which the scale, slag, oxide coating and other impurities will be entirely removed fromv the same. The method and apparatus is easily operated and will require no constant attention, as in the case of pickling, while it being without any hand operations it can beoperated continuously and on la variety of articles.

Various modifications and changes may be made in the design and construction of the apparatus, Without departing from the spiritfof the invention or sacrificing any of its advantages.

, What I claim as my inventionand de sire to secure'by Letters Patent is 1. An apparatus for treating metal articles comprising two pairs of feed rolls spaced lfrom each other, means co-operating with each of said rolls to hold an article in frictional engagement therewith, a continuous guide extending from one air of rolls to the other to direct an artic e from the first pair of rolls and its co-'operating means into co-action with the other pair of rolls and its co-operatingmeans, said guide having opposed incllned openings therein means for revolving vthe rolls to feed an article through the rolls, and an.

abrading blast device adapted to operate on said article between the rolls through `the o enings yin said guide.

n apparatus for treating metal arti- *cles comprising two spaced apart pairs of vertically positioned rolls, the rolls of each pair bein directly opposed and adapted to y grip and feedv 'an article therebetween, a'. continuous` ide formed of parallelly arranged plates extending from ,onek air of rolls vto the otherto direct an ates hav.-

for revolving the rolls t'o feed an article therebetween, and abrading blast devices arranged to operate through said' inclined openings and tov simultaneously cover an` area substantiall 2o-extensive with the .width of the heig t of the opening.

3. An aparatus for treatlng metal articles comprisin pairs of vertically posispaced from each other, means cooperating with each of said pairs ,artic e Afrom the first pair into e 'agement withthe second pair, said guide Slg ing inclined `openings therethrough,v means f little faster than the rolls2 in order to give of rolls to hold an article in frictional engagement therewith, a continuous guide formed of spaced apart parallel plates extending from one pair of rolls to the other to-direct an article from the first pair of rolls into engagement with the other pair, said guide plates having inclined openings therein, and abrading b ast devices operating through said inclined opening andcomprising a plurality of nozzles arranged in an oblique row corresponding substantially to the inclination of the openings and arranged so that the area covered by one nozzle merges with that covered by the adjacent ones, said row of nozzles being adapted to cover an area co-extensive with the transverse width of the openings.

4. An apparatus for treating metal articles comprising an abrading blast device. means for movlng an article across the path of the blast from said device, and meansfor tensioning or stretching said article when crossing the path of the blast. i

5. An apparatus for treating metal articles comprising a pair of spaced article feeding devices adapted to have an article move therebetween. means for applying an abrading blast to said article between said devices, and means for operating one of said devices faster than the other to tension or stretch the portion of the article between the devices.

6. An apparatus for treating metal articles comprising a pair of spaced article feeding devices adapted to have an article move therebetween, an abrading blast device including a plurality of blast nozzles arranged obliquely of the path of movement of the article, the 'discharge portions of each of said nozzles being overlapped with the discharge portions of adjacent nozzles whereb the area covered by the blast of each nozz e is merged into the area cove-red by the next adjacent blast so that the covered areas will extend unbrokenly ktransversely across'the article, and means for varying the efective area of the blast devices to accommodate for variation in the widths of the articles.

7. An apparatus fortreating metal articles comprising a pair of spaced apart feeding devices, each device including a pair of rolls which are vieldably supported so that they are movable toward and away from each other, said rolls being adapted to have an article moved therebetween,` means on each side of the article and positioned directly opposite each other for applying an abrading blast device to said article between said feeding devices, and means for operating one of said devices faster than the other to tension or stre-tch the portion of the article between the members.

8. An apparatus for treating strips comprising two pairs of feed rolls spaced from each other for holding and advancing the strips, the rolls of each pair being oppo-f sitely positioned and yieldable with relation to each other, a continuous guide-way each side of the strip and between the rollsl adapted to receive strips having a width co-extensive with the width of the rolls, and abrading blast devices positioned opposite each other to act on opposite sides of the strip and adapted to cover a width co-extensive with the width 0f thefstrips, said guideway being provided with openings through which the blast devices operate.

In testimony whereof, I the said JosEPH E. PooL have hereunto set my hand.

JOSEPH E. Poor...

Witnesses J. M. GEOGHEGAN, J. N. COOKE. 

